import * as React from 'react';
declare type ColumnItem = {
    title: string | Function;
    dataIndex: string;
    checked?: boolean;
    required?: boolean;
    group?: string;
};
export declare class FilterColumns extends React.Component<{
    title?: string | React.ReactNode;
    style?: any;
    children: React.ReactNode;
    columns: ColumnItem[];
    receivePropsUpdate?: boolean;
    onChangeKey?: any;
    onChangeColums?: any;
    initCallback?: boolean;
    cacheKey?: string;
}> {
    state: {
        visible: boolean;
        renderGroupBuff: {};
        groupLength: number;
        init: boolean;
    };
    componentDidMount(): void;
    UNSAFE_componentWillReceiveProps(nextProps: any): void;
    private init;
    private onHandleChecked;
    private onHandleOk;
    private onHandleVisibleChange;
    private renderRequiredGroup;
    private renderGroup;
    private renderContent;
    private renderTitle;
    render(): JSX.Element;
}
export {};